Valve.



No. 674,293. Patehted May I4, l90l.

. a. A. BRDNDER.

VALVE.-

(Application filed Oct. 3, 1900.)

(No Model.)

m: Noam; PETERS co. wam'umo. WASHINGTON, n. c.

UNTTED STATES PATENT OFFICE.

GASTON A. BRONDER, OF BROOKLYN, NEW YORK.

VALVE.

SPECIFICATION formingpart of Letters Patent No. 674;,293, dated May 14,1901.

Application filed October 3, 1900. berial No. 31.830. (N0 modeLJ To allwhom it may concern:

Be it known that I, GASTON A. BRONDER, a citizen of the United States,and a resident of the borough of Brooklyn, in the county of Kings andState of New York, have invented certain new and useful Improvements inValves, of which the following is a specification.

' The object of this invention is the production of improvements in theoperating mechanism of valves, so that they can be tightly closed,easily opened, and at the same time perform these functions in the leastduration of time, moving quickly when disengaged from the seats of theopenings and driven against the said seats when closing the ports withthe maximum forcedue to the applied moment of power.

In theaccompanying drawings I show my invention applied to a gate-valve,although it is evident that it is of general application. Valves of thistype may be moved to and from their seats by cutting threads on thevalve-spindles and actuating the same with threaded hand-wheels, bymeans of which the valves can be tightly forced to their seats; but itconsumes a long,duration of time for their operation, and, again, thevalve-spindles may be formed into racks and operated by pinions, inwhich latter case the valves can be quickly moved, but are not seatedwith sufficient pressure.

In my invention I obtain a mechanism which moves quickly when the valveis disengaged from its seat, and great pressure can be secured when thevalve is seated or at the instant it is being released from its seat.

Figure l is a fragmentary section of my invention on the line m w ofFig. 3, showing the valve in itshighest position. Fig. 2 is a similarsection with the valve in its lowest position. Fig. 3 shows a verticalcross'section on the line y y of Fig. 2. Fig. 4 represents a fragmentaryfront view of my invention, showing the outside mechanism in twodifferent positions. Figs. 5 and 6 show an elevation and top view of adetail.

The valve is shown at A, operating in guides 19 of the valve-box B,which is capped by the bonnet C. To the valve is journaled theconnecting-rod D, which oscillates on the pin d, secured in the valve A,a pocket a being provided for the same.

The crank-shaft E swings in the journalbox F and the combined journaland stuffing box G. The longitudinal axis of the crankshaft is situatedat the junction of the valvebox B and bonnet O. The connecting-rod D ispinned to the arm e of the shaft, and at the outer end of thecrank-shaft E the wormwheel H is secured, which is propelled by the wormI, held between bearings v 1 on the adjustable bracket L, which canswing to various positions on the hub of the wheel. Lugs 6 and c cconstitute outer supports for the end of the said swinging bracket andto which it is bolted in place by the bolts Z. The worm is provided witha hand-wheel M, in place of which a sprocket chain-wheel or a crank withintervening gears could be substituted.

The crank-shaft E will be seen to be constructed so as to make itimpossible to lower the valve after it has been raised without reversingthe rotation of the worm-wheel. To obtain this desirable feature, thecrank-arm 2 contains the cavity e in which the connecting-rod D fitswhen the valve is in its highest position, and by an inspection of Fig.1 it will be evident that the impinging of the con-. necting-rod on thecrank-arm in the said cavity prevents the further rotation andconsequent movement of the valve torise or to lower again unless thedirection of the wormsh'aft is reversed. The shape of the bonnet O, withits slanting side Z also obtains the same result, because if the upperend of the connecting-rod comes in contact with the inner face of c itwill not allow the valve to travel any farther in one direction.

At 0 c are shown two lugs at the junction of the bonnet O and valve-boxB to secure the adjustable bracket L when it is swung rod, providingalso a nut d to make the joint secure. This joint cannot unscrew becausethe pins cl and d in the connecting-rod ends prevent turning, and whenit is desired to adjust the rod for lost motion the said pins areremoved and the proper length of rod is secured by loosening the nut (Zand extending or shortening the rod, as required, after which the nut isagain tightened in place.

If we describe a circular are t 25 from the the axis 6 of thecrank-shaft with its arm as a radius, we can graphically show themovements of the valve, and, referring to Fig. 1, the valve is shown inits highest position, and when the crank-arm moves in the direction ofthe arrow it will be evident that the speed of the downward movement ofthe valve increases until the crank-arm assumes a horizontal position,after which the speed decreases until the valve is seated, as shown inFig. 2. The moment of force applied to the crank-shaft through theworm-wheel is constant; but the factors of the momen t-that is, theforce and leverage transmitted to the pin (Z of the connecting-rod-vary,and the moment at any instant is equal to the pressure on that pin andthe perpendicular dis tance of the pin from the line connecting thecenter e of the shaft and the center of the pin d, and that distance isgreatest when the arm 6 is approximately horizontal and least when inthe position shown in Fig. 2, Which consequently secures the greatestspeed of the valve in the vicinity of the horizontal position of thecrank-arm and the greatest pressure on the pin d, and hence on the pin(1, when the valve is secured to its seat, Which meet the requirementsof the problem.

Having described my invention, I desire to 1 secure by United StatesLetters Patent, and claim- 1. A mechanism to actuate the movements of avalve, comprising a worm and a wormwheel, a crank-shaft supporting saidWormwheel, a crank-arm extending from the shaft, a connecting-rod pinnedto the crank-arm, the crank-arm containing a cavity for theconnecting-rod, the said connecting-rod preventing a complete revolutionof the crank, in combination with a valve suspended from theconnecting-rod.

2. A valve mechanism, comprising avalve, a connecting'rod pinned to thevalve,a crankshaft pinned to the connecting-10d, a wormwheel secured tothe shaft, a worm actuating the worm-wheel, in combination with anadjustable bracket supported on the hub of the worm-wheel, and supportsfor securing the handwvheel in different operative positions.

3. A valve mechanism, comprisinga valve A, an adjustable connecting-rodD, pinned to the valve by the pin d, a crank-shaft E with its arm pinnedto the connecting-rod, a worm-wheel H secured to the shaft, a worm Iactuating the worm-Wheel, a hand-wheel M secured to worm-shaft, incombination with an adjustable bracket L,a valve-box B, a bonnet 0secured to valve-box, and supports a, and 0 o for the swinging bracket.

Signed at New York, in the county of New York and State of New York,this 1st day of October, A. D. 1900.

GASTON A. BRONDERQ Witnesses:

ALICE LIPPINCOTT, O. B. HARRIS.

